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+Program Example100;
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+
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+{ Program to demonstrate the CompareChar function. }
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+
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+Const
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+ ArraySize = 100;
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+ HalfArraySize = ArraySize Div 2;
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+
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+Var
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+ Buf1,Buf2 : Array[1..ArraySize] of char;
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+ I : longint;
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+
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+ Procedure CheckPos(Len : Longint);
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+
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+ Begin
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+ Write('First ',Len,' characters are ');
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+ if CompareChar(Buf1,Buf2,Len)<>0 then
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+ Write('NOT ');
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+ Writeln('equal');
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+ end;
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+
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+ Procedure CheckNullPos(Len : Longint);
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+
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+ Begin
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+ Write('First ',Len,' non-null characters are ');
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+ if CompareChar0(Buf1,Buf2,Len)<>0 then
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+ Write('NOT ');
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+ Writeln('equal');
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+ end;
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+
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+begin
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+ For I:=1 to ArraySize do
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+ begin
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+ Buf1[i]:=chr(I);
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+ If I<=HalfArraySize Then
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+ Buf2[I]:=chr(I)
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+ else
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+ Buf2[i]:=chr(HalfArraySize-I);
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+ end;
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+ CheckPos(HalfArraySize div 2);
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+ CheckPos(HalfArraySize);
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+ CheckPos(HalfArraySize+1);
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+ CheckPos(HalfArraySize + HalfArraySize Div 2);
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+ For I:=1 to 4 do
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+ begin
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+ buf1[Random(ArraySize)+1]:=Chr(0);
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+ buf2[Random(ArraySize)+1]:=Chr(0);
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+ end;
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+ Randomize;
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+ CheckNullPos(HalfArraySize div 2);
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+ CheckNullPos(HalfArraySize);
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+ CheckNullPos(HalfArraySize+1);
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+ CheckNullPos(HalfArraySize + HalfArraySize Div 2);
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+end.
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